Abstract: With the increase in capacity of petrochemical plant in recent years, there are more and more coal unloading, storage and conveying systems for raw coal and fuel coal, and the processing capacity of crusher is increasing. The crushers selected by the process discipline include reversible hammer type crusher, four teeth roll type crusher, ring hammer type crusher, etc. At present, there are 3 methods for supporting the crusher, i.e. the independent frame foundation that separates the crusher foundation from the main structure, the crusher directly supported by beam-slab structure, and the design of damping between crusher supporting structure and beam-slab structure. These 3 methods for supporting the crusher have their own application scopes and advantages and disadvantages. Relevant specifications and design manuals have different requirements for the three supporting methods. A more reasonable and applicable supporting scheme is to be put forward by modeling, calculating and analyzing the 3 supporting methods using the floor and equipment vibrating program of YJKS and the STAAD.Pro software of Bentley based on actual engineering projects

Key words: coal crusher, 3 supporting methods, Disturbing load, Maximum node vertical displacement